import { ProviderRef } from './provider-refs/provider-ref';
import { Provider, ProviderToken } from './providers';
import { Type } from '../common/cli-types';
import { ConfiguredModule } from '../module/module-models';
import { CommandRoute } from '../command/command-routes';
import { Injector } from './injector';
/**
 * A set of utility functions that assist working with providers
 */
export declare class ProviderUtils {
    /**
     * A factory function that creates the appropriate `ProviderRef` from a `Provider`
     * @param provider provider from which ProviderRef must be created
     */
    static toProviderRef(provider: Provider, parent: Injector, globalProviders: ProviderRef[]): ProviderRef;
    /**
     * Determines if two providers are 'equal' to one another by comparing their tokens
     * @param provider1 comparison provider 1
     * @param provider2 comparison provider 2
     */
    static equal(provider1: Provider, provider2: Provider): boolean;
    static isGlobal(provider: Provider): boolean;
    static isSingleton(provider: Provider): boolean;
    /**
     *  Returns the provider token based on the provider's type
     * @param provider provider
     */
    static providerToken(provider: Provider): ProviderToken;
    /**
     * Determines if an object meets some sort of provider definition. This method has limitations as other constructors (Commands/Modules) could
     * be classified as providers
     * @param model object to check
     */
    static isProvider(model: CommandRoute | Type<any> | Provider | ConfiguredModule): boolean;
    /**
     * Returns a user-friendly name from a provider token to display in informative error messages
     * @param key The provider's token which can be a class constructor, string or symbol
     */
    static providerName(key: ProviderToken): string;
}